book Maths Puzzle Numerical Ability

Solve all real and imaginary solutions: 1/X + 1(X-1) = 1/4

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book Other Question

The Rileys have $27,000 to invest. They intend to invest part of the money in CD's at 8.5% and the remainder in a savings account at 5%. If they wish to receive the same income f find x if xsquared=2x+5